<template>
  <div class="nav-bar">
      <div class="left">
           <slot name="left"></slot>
      </div>
     <div class="center">
           <slot name="center"></slot>
      </div>
      <div class="right">
           <slot name="right"></slot>
      </div>
  </div>
</template>

<script>
export default {

}
</script>

<style>
.nav-bar{
    display: flex;
    height: 44px;
    line-height: 44px;
    text-align: center;
    box-shadow:0 1px 1px rgba(100, 100, 100, .1);
}
.left{
    width: 60px;
   
}
.center{
    flex: 1; /*  //占据中间的所有空间 */
     
}
.right{
    width: 60px;
    
}
</style>